With this Jack 3.5mm to Type-C adapter from UNIQ Accessory you can also use devices with a standard 3.5 mm Jack on devices that only have a USB-C input. If you want to connect your earphones or headphones and your smartphone does not have a headphone jack, simply use the USB-C 3.5 mm Jack.
If you are looking for a supplier of telephone accessories for your webshop or store, then Sowsanci's wholesaler is the right choice for you.